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Saturday, July 20, 2013

The planets orbiting cooler stars have a warm climate

There is an assumption
that the planets orbiting the cold star may not be on the surface of snow or
ice, in contrast to those that rotate around hot. This is possible due to the
interaction of starlight with ice and snow on the surface of the planets.

Stars emit light of a
Different type comes from the hot stars visible with high energy content
light as well as ultraviolet rays. Cold also emits infrared rays to the same
and have the near infrared illumination which has a much smaller amount ofenergy.

It seems logical that
the heat is on rocky ground or planets should depend on the amount of light
they receive from the stars. But a new study conducted by the climate models
Aomavoy Shields, a doctoral student at the University of Washington Astronomy
Department, made ​​a significant discovery
in the field. Accordingly, the planet in orbit cold stars may indeed be much
warmer and may have on its surface a much smaller proportion of the snow or
ice, rather than those that rotate around the hot even if they receive the same
amount of light.

The fact the ice is
able to absorb waves of much greater length. For example, more light around
cold dwarf star which is capable of absorbing the ice, the warmer the planets
in its orbit.

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